Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
25/05/2024, 02:47
General
- Target 2024-05-25_872c246e0c0df274d759033e6b37a93c_cryptolocker.exe
- Size 60KB
- Sample240525-c96tmscb48
- SHA256 cbc8024ad44fbbb185e2247da10c45d25a9fd0530b1566ac8820eaa05dc87a81
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
- Detection of Cryptolocker Samples 5 IoCs
- UPX dump on OEP (original entry point) 5 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- UPX packed file 5 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-05-25_872c246e0c0df274d759033e6b37a93c_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-25_872c246e0c0df274d759033e6b37a93c_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
asih.exe
memory/2772-18-0x0000000000500000-0x0000000000510000-memory.dmp
memory/2772-20-0x00000000006C0000-0x00000000006C6000-memory.dmp
memory/2772-26-0x0000000000560000-0x0000000000566000-memory.dmp
memory/2772-27-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3152-0-0x0000000002150000-0x0000000002156000-memory.dmp
memory/3152-1-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3152-2-0x0000000002050000-0x0000000002056000-memory.dmp
memory/3152-9-0x0000000002150000-0x0000000002156000-memory.dmp
memory/3152-17-0x0000000000500000-0x0000000000510000-memory.dmp